HARV_POLY: This dataset represents completed harvest land treatments on BLM managed lands in the states of Oregon and Washington. Harvest treatments are the cutting and removal or trees or biomass.

Supplemental information:

Treatments are human alterations to the landscape for the purpose of natural resource management, including use, enhancement, and protection. A treatment creates something new; it creates a new physical entity on the landscape. This distinguishes treatments from attributes or information about treatments. Treatments are areas (polygons), zones of alteration.

This is a Vector data set.
It contains the following vector data types (SDTS terminology):

GT-polygon composed of chains (57361)

What coordinate system is used to represent geographic features?

Horizontal positions are specified in geographic coordinates, that is, latitude and longitude.
Latitudes are given to the nearest 2e-008. Longitudes are given to the nearest 2e-008. Latitude and longitude values are specified in Decimal Degrees.

Unique number identifier for the treatment entity. Multiple "units" of a treatment are given unique TRT_IDs and TRT_ID is unique across all treatment feature classes. Multiple units or phases of a treatment project are tied together by TRT_NAME, PLANID, NFPORS_PROJID or CONTRACTID as applicable. (Source: BLM)

TRT_NAME

Free text name that identifies the treatment entity, preferably with a place reference and treatment type reference. The name is one-to-one with TRT_ID and the two together provide more reliable identification as long as neither is changed. Naming conventions need to be standardized by programs and/or offices and enforced in order to avoid confusion and loss of information. (Source: BLM)

UNIT_NUM

PROJ_NAME

District-assigned name for a project that encompasses several treatment types and/or treatment units. It is not the same as the plan or project authorizing the action (PLANID) and there may be many PROJ_NAME for one PLANID. (Source: BLM)

HARV_TYPE

General type of harvest activity. (Source: BLM)

TRT_STATUS

Status of the treatment action. Used in conjunction with TRT_DATE. (Source: BLM)

Value

Definition

Completed

Treatment action completed

TRT_FY

SALE_DATE

SALE_FY

HARV_RX

TRT_DATE

Date the treatment was completed or planned start date. TRT_STATUS provides the necessary information to know whether the treatment is completed or not. YYYYMMDD or YYYYMM, or YYYY format. (Source: BLM)

HARV_METH

Specific method of harvesting. (Source: BLM)

REASON

REASON2

TRT_TARG

Target (affected species) of the treatment action. (Source: BLM)

Value

Definition

Juniper

Juniper

Duff/Slash

Duff/Slash

Cheatgrass

Cheatgrass

Shrub

Shrub

Bitterbrush

Bitterbrush

Big Sagebrush

Big Sagebrush

Mixed Sagebrush

Mixed Sagebrush

Native Grass

Native Grass

Native Grass/Forb

Native Grass/Forb

Mixed Grass-Native and Non-native

Mixed Grass-Native and Non-native

Grass/Shrub

Grass/Shrub

Ponderosa Pine

Ponderosa Pine

Douglas Fir

Douglas Fir

Pine/Fir Mix

Pine/Fir Mix

Conifers-Non Juniper

Conifers-Non Juniper

Mixed Tree-Conifer/Hardwood

Mixed Tree-Conifer/Hardwood

Hardwood

Hardwood

Oak Woodland

Oak Woodland

Hardwood/Shrub

Hardwood/Shrub

All Vegetation

All Vegetation

Weeds

Weeds

Medusahead Rye

Medusahead Rye

Crested Wheatgrass

Crested Wheatgrass

Biomass

Biomass

Livestock

Livestock

Rodents

Rodents

Big Game

Big Game

Herbivore

Herbivore

Rust Fungi

Rust Fungi

None

For contingency or control area

Unknown

Unknown

BLM_ORG_CD

Combination of the BLM "State" and Field Office which has administrative responsibility for the treatment. The OR/WA BLM may have administrative responsibility over some area that is physically located in Nevada, Idaho, and California, and vice versa. Similarly, the treatment may cross Resource Area or District boundaries and the administrative responsibility is assigned to one or the other. The unit can be identified only to the district or even state level. (Source: BLM)

Value

Definition

OR000

Oregon/Washington BLM

ORB00

Burns District Office

ORB05

Three Rivers Field Office

ORB06

Andrews Field Office

ORC00

Coos Bay District Office

ORC03

Umpqua Field Office

ORC04

Myrtlewood Field Office

ORE00

Eugene District Office

ORE05

Siuslaw Field Office

ORE06

Upper Willamette Field Office

ORL00

Lakeview District Office

ORL04

Klamath Falls Field Office

ORL05

Lakeview Field Office

ORM00

Medford District Office

ORM05

Butte Falls Field Office

ORM06

Ashland Field Office

ORM07

Grants Pass Field Office

ORM08

Glendale Field Office

ORP00

Prineville District Office

ORP04

Central Oregon Field Office

ORP06

Deschutes Field Office

ORR00

Roseburg District Office

ORR04

Swiftwater Field Office

ORR05

South River Field Office

ORS00

Salem District Office

ORS04

Cascades Field Office

ORS05

Marys Peak Field Office

ORS06

Tillamook Field Office

ORV00

Vale District Office

ORV04

Malheur Field Office

ORV05

Baker Field Office

ORV06

Jordan Field Office

ORW00

Spokane District Office

ORW02

Wenatchee Field Office

ORW03

Border Field Office

PLANID

The official name/identifier for the plan or project authorizing the action. Provides link to project or planning area boundary polygon. Domains are too lengthy to list. Contact the State Data Administrator for a copy. (Source: BLM)

GIS polygon acres. This is necessary in order to compare to TRT_ACRES. Must be recalculated with every edit submission. Use the projection for the UTM zone the treatment unit falls in, and datum NAD83 with units meters. May not be relevant to Biological treatments (Source: BLM)

TRT_ACRES

These are actual acres treated or estimated acres proposed for treatment. Not derived from GIS but can be set to GIS_ACRES, if the entire polygon is considered treated. The TRT_ACRES may be substantially less than the total polygon acres, particularly for CHEM_POLY where treated acres (TRT_ACRES) is calculated as total gallons applied (GAL_MIX_AP) divided by MIX_RATE. May not be relevant to Biological (BIO) or Protection (PROT) treatments. (Source: BLM)

ARCH_CLEAR

Date the proposed treatment area received archaeological clearance. (Source: BLM)

BOT_CLEAR

Date the proposed treatment area received botanical clearance. (Source: BLM)

WILD_CLEAR

Date the proposed treatment area received wildlife clearance. YYYYMMDD or YYYYMM or YYYY format. (Source: BLM)

COORD_SRC

The actual source of the GIS coordinates for the polylines. If the line is copied from another theme and already has COORD_SRC, it should be reviewed and may need to be changed for use in this dataset. (Source: BLM)

Value

Definition

CFF

Lines duplicated or buffered from Cartographic Feature Files (USFS)

DEM

Digital Elevation Model (30 m or better accuracy) used for creation of contours

Linework derived from interpretation of satellite or other non-photographic imagery

MAP

Digitized linework from hardcopy map

MTP

Lines duplicated from Digital Master Title Plat

SOURCEL

Source Layer from BLM GIS

SRV

Survey methods were used to create the linework (e.g., COGO)

TIGER

Tiger Data

TRS

Coordinates only given as a legal description (township, range, section)

UNK

Unknown coordinate source

WODDB

WODDB Photogrammetric

ACCURACY_FT

How close, in feet, the spatial GIS depiction is to the actual location on the ground. There are several factors to consider in GIS error: scale and accuracy of map-based sources, accuracy of Global Positioning System (GPS) equipment, and the skill level of the data manipulators. A value of "0" indicates no entry was made. This is the correct value when the COORD_SRC is another GIS theme (Digital Line Graphs (DLG), Geographic Coordinate Database (GCD), Digital Elevation Model (DEM)) because the accuracy is determined by that theme. However, if COORD_SRC is MAP (digitized from a paper map) or GPS, a value of "0" indicates a missing value that should be filled in either with a non-zero number or "-1." A value of "-1" indicates that the accuracy is unknown and no reliable estimate can be made. (Source: BLM)

Legacy data may be introduced to the dataset by manuscripting on maps and digitizing, GPS, on-screen digitizing using a DOQ or DRG backdrop, duplicating lines from ownership, roads or stream layers, or a combination of these. Treatment boundaries that are based on identifiable physical features such as roads, ridgelines, streams, or on ownership changes should utilize those source line features to illustrate the cartographic relationship. New treatment polygons and edits of existing polygons will be added and noted by district staff.

Many features were imported from the legacy data and the attributes are very incomplete. However, newer features will have more complete information and over time the dataset will become more accurate.

Access constraints: PUBLIC DATA: None, these data are considered public domain.

Use constraints:

These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived, and both scale and accuracy may vary across the data set. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. These data are neither legal documents nor land surveys, and must not be used as such. Official records may be referenced at most BLM offices. Please report any errors in the data to the BLM office for which it was obtained. The BLM should be cited as the data source in any products derived from these data. Any Users wishing to modify the data should describe the types of modifications they have performed. The User should not misrepresent the data, nor imply that changes made were approved or endorsed by BLM. This information may be updated without notification.

The BLM assumes no responsibility for errors or omissions. No warranty is made by the BLM as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data; nor shall the act of distribution to contractors, partners, or beyond, constitute any such warranty for individual or aggregate data use with other data. Although these data have been processed successfully on computers of BLM, no warranty, expressed or implied, is made by BLM regarding the use of these data on any other system, or for general or scientific purposes, nor does the fact of distribution constitute or imply any such warranty. In no event shall the BLM have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.